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United States Patent | 5,505,861 |
Hirs | April 9, 1996 |
A gravity cartridge filter for filtering fine particles from a fluid comprises a cartridge for disposition in a contaminated fluid tank. The cartridge comprises a plurality of layers that include a fluid passage in vertical juxtaposition with a filter medium, such as a mat, in each layer whereby gravity effects settling of particles suspended in the fluid onto the medium within each respective layer.
Inventors: | Hirs; Gene (37493 Schoolcraft, Livonia, MI 48150) |
Appl. No.: | 267412 |
Filed: | June 28, 1994 |
Current U.S. Class: | 210/521; 210/513 |
Intern'l Class: | B01D 021/02 |
Field of Search: | 210/800,802,321.74,321.83,416.5,446,447,448,493.4,493.5,513,521 |
3279616 | Oct., 1966 | Bourdale | 210/493. |
4039457 | Aug., 1977 | Schacht et al. | 210/493. |
4650581 | Mar., 1987 | Angles et al. | 210/493. |
4826589 | May., 1989 | Hirs | 210/159. |
4826596 | May., 1989 | Hirs | 210/387. |
4944877 | Jul., 1990 | Maples | 210/321. |
5112485 | May., 1992 | Hirs | 210/387. |
5128037 | Jul., 1992 | Pearl et al. | 210/321. |
5139670 | Aug., 1992 | Hirs | 210/394. |
5154827 | Oct., 1992 | Ashelin et al. | 210/493. |